The Stimulation of Superoxide Dismutase Enzyme Activity and Its Relation with the Pyrenophora teres f. teres Infection in Different Barley Genotypes

Viola Kunos, Mónika Cséplő, Diána Seress, Adnan Eser, Zoltán Kende, Andrea Uhrin, Judit Bányai, József Bakonyi, Magda Pál and Klára Mészáros
Additional contact information
Viola Kunos: Agricultural Institute, Centre for Agricultural Research, 2462 Martonvásár, Hungary
Mónika Cséplő: Agricultural Institute, Centre for Agricultural Research, 2462 Martonvásár, Hungary
Diána Seress: Plant Protection Institute, Centre for Agricultural Research, 1022 Budapest, Hungary
Adnan Eser: Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary
Zoltán Kende: Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary
Andrea Uhrin: Agricultural Institute, Centre for Agricultural Research, 2462 Martonvásár, Hungary
Judit Bányai: Agricultural Institute, Centre for Agricultural Research, 2462 Martonvásár, Hungary
József Bakonyi: Plant Protection Institute, Centre for Agricultural Research, 1022 Budapest, Hungary
Magda Pál: Agricultural Institute, Centre for Agricultural Research, 2462 Martonvásár, Hungary
Klára Mészáros: Agricultural Institute, Centre for Agricultural Research, 2462 Martonvásár, Hungary

Sustainability, 2022, vol. 14, issue 5, 1-15

Abstract: Changes in superoxide dismutase (SOD) enzyme activity were examined in infected barley seedlings of five cultivars with the goal to study the role of SOD in the defense mechanism induced by Pyrenophora teres f. teres (PTT) infection. Our results showed that although there were differences in the responses of the cultivars, all three PTT isolates (H-618, H-774, H-949) had significantly increased SOD activity in all examined barley varieties at the early stages of the infection. The lowest SOD activity was observed in the case of the most resistant cultivar. Our results did not show a clear connection between seedling resistance of genotypes and SOD enzyme activity; however, we were able to find strong significant correlations between the PTT infection scores on the Tekauz scale and the SOD activity. The measurement of the SOD activity could offer a novel perspective to detect the early stress responses induced by PTT. Our results suggest that the resistance of varieties cannot be estimated based on SOD enzyme activity alone, because many antioxidant enzymes play a role in fine-tuning the defense response, but SOD is an important member of this system.

Keywords: barley; Pyrenophora teres f. teres; net blotch disease; biotic stress; superoxide dismutase; antioxidant enzyme (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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